تَقُولُ: «جَاءَنِي مُسْلِمِيَّ»؛ تَقْدِيرُهُ: «مُسْلِمُوْيَ».
Translation: You say, “My Muslim men came to me.” Its reconstructed form is “مُسْلِمُوْيَ” (an explanatory form, not a spoken alternative).
مُسْلِمِيَّ is the pronounced form. مُسْلِمُوْيَ is the underlying form given in the textbook to explain the sound change; it is not a normal alternative sentence to recite.
Source: Hidayat-un-Nahw, printed p. 22. Vowel marks have been added for instruction.